Associations among Physical Activity, Diet, and Obesity Measures Change during Adolescence

Table 2

Canonical correlation analysis evaluating health behaviors and confounders (obesity correlates) with body composition. Percent variance explained by first indices and first indices’ standardized canonical coefficients by visit year.

y		% var.	Obesity correlates										Body composition
			Inc	Race	RxHAQ	Rx3d AD	HAQ	3d AD	ED	Av kcal	Sat fat %	Fiber	BMI	BF%
3	1693	81.43	0.21	−0.50	0.33	0.11	−0.36	−0.29	0.07	0.05	−0.21	−0.05	−1.80	1.12
5	1557	75.28	0.38	−0.32	0.01	−0.45	0.06	0.18	0.16	0.30	−0.12	−0.26	−1.61	0.75
7	1412	62.65	0.32	−0.71	0.24	0.14	−0.04	−0.22	0.18	−0.02	0.28	0.26	−1.19	0.22
8	1378	63.45	0.15	−0.67	0.37	−0.64	−0.19	0.18	0.18	0.07	0.17	0.03	−1.73	0.90
10	1679	83.47	0.38	−0.68	−0.11	0.11	0.42	−0.28	0.32	0.14	0.08	0.06	−1.14	0.16

Significance at ; significance at ; significance at ; for dependent variates significance is evaluated with a univariate test for association with first indices canonical correlation.
3-day activity diary score, 3d AD; average caloric intake, Av kcal; average dietary saturated fat percent, Sat fat %; average energy density, ED; average fiber intake, fiber; habitual physical activity questionnaire score, HAQ; income category, Inc; body fat percent, BF%; percent variance, % var.; race by 3-day AD, Rx3d AD; race by HAQ, RxHAQ; year, y.